Chapter 6 Calibration And Troubleshooting Guide; Introduction; Introduction; Calibration Overview - ILX Lightwave LDX-3200 Series User Manual

Chapter 6
CALIBRATION AND TROUBLESHOOTING GUIDE

Introduction

This chapter describes calibration of your LDX-3200 Series Current Source. Descriptions of the required test
instruments, calibration conditions, and the detailed procedures for calibration of the instrument's Laser Diode
Current Source are included. A troubleshooting guide is also offered for some of the more common failure symptoms.
This chapter is divided into three major sections, Local (front panel) calibration, remote (through the GPIB Interface)
calibration, and a troubleshooting guide.

Calibration Overview

There are several calibrations to be performed for a completely calibrated LDX-3200 Current Source. The Laser Diode
Current Source calibration consists of calibrating the current source in both ranges and both modes (low and high
bandwidth), calibrating the PD monitor feedback ammeter and finally the forward voltage measurement. The current
limits are calibrated internally by the instrument as part of the calibration process.
Your LDX-3200 Series Current Source can be calibrated with the case closed. It should be calibrated every 12 months
or whenever performance verification indicates that calibration is necessary, such as differences between set point
and measurement display values which exceed the accuracy specification. Calibrate the instrument under laboratory
conditions. We recommend calibration at 23°C ± 1.0°C. When necessary, however, the LDX-3200 Series Current
Source may be calibrated at its intended use temperature if this is within the specified operating temperature range of
0 to 40°C.
Finally, the LDX-3200 Series Current Source should be allowed to warm up for at least 1 hour before calibration.

Recommended Equipment

Recommended test equipment for calibrating the LDX-3200 Series Current Source is listed in Table 6.1. Equipment
other than that shown in the table may be used if the specifications meet or exceed those listed.
Description
DMM
CALIBRATING THE LDX-3200 SERIES CURRENT SOURCE
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Mfg./Model Specification
HP 3457A DC Amps (@ 1.0 A): ±0.02 %
Resistance (@ 10 Ω): ±0.02 %
0.1 µA or 0.1 mV resolution
Table 6.1 Recommended Test Equipment
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CHPT 6